ELIMINATION OF STRIKE-OVER IN RF PLASMA GUNS
Assignee
General Electric
Filed as: GENERAL ELECTRIC COMPANY, A CORP. OF NY
Filed
Feb 13, 1991
Granted
Aug 3, 1993
Location
ALTAMONT NY US
Abstract
Strike-over in an RF plasma gun is eliminated by interposing a grounded isolation device between the plasma jet and the RF coil which supplies energy to the plasma. The isolation device comprises a plurality of separated segments spaced apart in a circumferential direction and electrically connected together at one end and to ground potential. The shield substantially eliminates the parasitic distributed capacitance between the RF coil and the plasma by interrupting the electrical field coupling between the coil and the plasma and shunting most of the capacitive current flow to ground. The invention enables reliable operation of the device at frequencies in the 2-4 MHz range.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Dec 2, 1991
Rescinded
Mar 10, 1993
Duration
1 year, 3 months
Inventor
- 1GERHARD FRIND
Record Details
- Patent number
- US 5233155
- Application
- 07654696
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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